When did the former wife of Graf von Bismarck-Schönhausen donate a piece to the Smithsonian she purchased on her honeymoon with a different man?
1967
-1
Section::::Abstract.
Bismarck Sapphire Necklace
26917630
-1
Section::::Abstract.
Bismarck Sapphire Necklace
26917630
-1
Section::::Abstract.
Mona von Bismarck
8197775
-1
Section::::Abstract.
Mona von Bismarck
8197775